Automatic fish-screen.



E. KNIFE.

AUTOMA/TIG FISH SCREEN. APPLICATION FILED SEPT. 19, 1911.

1,054,556 Patented Feb. 25, 1913.

um/who e 142 3. 1 15 1 Everett Knzlpe collected debris thereof upon or down-stream side.

PATENT EVERETT KNIPE, OF EMMETT', IDAHO.

AUTOMATIC FISH-SCREEN.

To all whom it may concern Be it known-that I, Evnnm'r KNIFE, a citizen of the United States, residing at Emmett, in the county of Canyon and State of Idaho, have invented new and useful Improvements in Automatic Fish-Screens, of which the following is a specification.

This invention relates to fish screens and more particularly to that type which are used in front of the fluid gates of reservoirs and irrigation'ditches so as to prevent the fish in the reservoir from getting into the ditches.

The object of the invention is the provision of a simple and eflicient deviceof this character which will automatically clean itself and which will discharge the the opposite Further objects of the invention will appear'as the following specific description is read in connection with the accompanying drawing, which forms a part of this application, and in which Figure 1 is a top plan view. Fig. 2 is a side elevation. Fig. 3 is a section on the line 3-3 of Fig. 2.

In the specific embodiment of the invention illustrated herein, a'chute box 1 isshown in the sides 2 of which is journaled a shaft 3 upon which a water wheel 4 is mounted. Thecshaft of this wheel extends beyond one side of the box and hassecured thereto a gear wheel 5 which meshes with a similar gear wheel 6 upon the stub shaft 7 which also carries a sprocket wheel 8. This sprocket wheel ,8 is connected by means of a sprocket chain 9 to a somewhat larger sprocket wheel 10 keyed to the shaft .11 which is journaled in the sides of the box and carries-a screen drum 12. This screen drum extends entirely thereof.

the drum at quartering intervals are longi- Specification of Letters Patent. Application filed September 19, 1911. Serial No. 650,130.

I tudinal series tributing point in the across the box and has a diameter slightly greater than the top- Patented FebL25, 1913.

of teeth 13 which passbetween similar teeth 14 projecting upwardl from the bottom of. the'box. These teet pick up the debris which collects upon the bottom of the box carry the same up over the drum to the diswater upon the downstream side of the drum, thereby cleaning the drum and permitting free passage of the water at all times. Any trashadherin to the drum upon the downstream side wil be washed free thereof through the drum and the intermeshing teeth or projections 13 and 14 prevent the escape of the fish beneath the drum, as will be readily understoo 7 It will be noticed that thedrum 12 rotates in the direction opposite that to the water wheel and in a direction opposite to the flow of the current.

Having thus described the invention, what I claim as new is 1. In combination, a chute box, a screen drum journaled thereacross, means for driving said screen drum in opposition to the current traveling through the box, teeth projecting up from the box, and intermeshing teeth on the drum.

2. In combination, a chute box, a screen drum journaled thereacross, teeth projecting up from the box in close proximity to the drum to prevent passage of animate or inanimate objects between the drum and the box, means carried by the drum for carrying debris and the like over the drum, a water wheel journaled in the box, and a driving connection between the water Wheel and the drum which rotates the latter in anopposite direction to the current traveling in the box.

In testimonfy whereof I aflix my signature in presence 0 two witnesses.

EVERETT KNIPE.

by the Water passing 

